Meaning

noun 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites

noun an indefinitely short time

noun the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield

originFrom Middle English secunde, second, secound, secund, borrowed from Old French second, seond, from Latin secundus (“following, next in order”), from root of sequor (“to follow”), from Proto-Indo-European *sekʷ- (“to follow”). Doublet of secund and secundo. Displaced native twoth and partially displaced native other (from Old English ōþer (“other; next; second”)).

Etymology from Wiktionary, CC BY-SA 3.0